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Selected surface topography parameters of composites before and after wear. Surface roughness (Sa (µm) [A]), top-to-bottom (St [B] and surface fractal dimension (C) of the composites pre-and post-wear. Statistically significant difference: t = p < 0.05 vs. TEC, s = p < 0.05 vs. SDR, f = p < 0.05 vs. FBF; asterisk (*) denotes p < 0.05 for pre- vs. post-wear pairwise comparisons (n = 9).
